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PUNCTELE A SI E succes!​

PUNCTELE A SI E Succes class=

Răspuns :

Răspuns:

2x-3y=7|x4

4x+4y=4|x3

8x-12y=28

12x+12y=12

4x =16

x=4

4x4+4y=4

16+4y=4

4y=-16+4

4y=-12

y=-3

e)2x+y=-2|x-3

3x+2y=-1|x2

-6x-3y=6

6x+4y=-3

1y=-3

y=-3

2x-3=-1

2x=+3-1

x=1

asa cred